JP6055638B2 - Attachment structure of seat connecting member and attachment member, and seat structure - Google Patents

Description

  The present invention relates to a mounting structure for a connecting member for a seat and a mounting member, and a seat structure.

  Conventionally, in a seat structure of a vehicle or the like, a pipe-shaped connecting member is bridged between a pair of cushion frames. For example, an attachment member such as a pin member for adjusting the distance between the pair of cushion frames and a shaft member for pivotally supporting the link member is inserted into the end portion of the connecting member and fixed by welding. (For example, refer to Patent Document 1).

JP 2012-136088 A

In recent years, development of a seat structure using a resin cushion frame has been progressing. It is not practical to use welding when fixing the attachment member to the resin connection member because the connection member itself melts.
Therefore, an object of the present invention is to make it possible to firmly attach the attachment member to the resin connection member.

In order to solve the above problems, the attachment structure of the connecting member for a seat and the attachment member according to the invention of claim 1 is:
The connecting member for the sheet is formed in a pipe shape,
The mounting member is fixed to the cushion frame by a pin member, and includes a fitting portion that fits into an end portion of the seat connecting member and a concave portion that fits the pin member .
The fitting portion is
A plurality of abutting portions that abut against the inner circumferential surface of the sheet connecting member at a predetermined interval in the circumferential direction;
A non-contact portion that is provided between the plurality of contact portions and does not contact the inner peripheral surface of the sheet connecting member;
The end portion of the connecting member for the sheet and the fitting portion of the mounting member are bonded by an adhesive filled in the non-contact portion,
The pin member is formed in a substantially T shape in a cross section along the fitting direction, and is in contact with the cushion frame, the inner peripheral surface of the recess of the mounting member, and the axial end surface of the mounting member. It is a feature.

The invention according to claim 2 is the attachment structure of the connecting member for seat and the attachment member according to claim 1,
At least three of the contact portions are provided,
The center of the connecting member for a sheet is arranged in a polygon connecting the at least three contact portions.

The invention according to claim 3 is the attachment structure of the connecting member for seat and the attachment member according to claim 1 or 2,
A notch is formed at the end of the sheet connecting member,
The fitting portion of the mounting member is provided with a protrusion that engages with the notch.

The invention according to claim 4 is the attachment structure of the connecting member for seat and the attachment member according to claim 3,
The protrusion is formed in the non-contact portion.

The invention according to claim 5 is the attachment structure of the connecting member for seat and the attachment member according to claim 3 or 4,
The length of the contact portion in the axial direction is set longer than the protrusion.

The invention according to claim 6 is the attachment structure of the connecting member for seat and the attachment member according to any one of claims 3 to 5,
A plurality of the notches are provided at the end of the connecting member for the sheet,
A plurality of the protrusions are provided so as to engage with each of the plurality of notches.

The invention according to claim 7 is the attachment structure of the connecting member for seat and the attachment member according to any one of claims 1 to 6,
The contact portion has a taper shape that gradually tapers toward the tip.

The invention described in claim 8
A seat structure including a pipe-like connecting member for seat and an attachment member spanned between the left and right cushion frames,
The connecting member for the sheet is formed in a pipe shape,
The mounting member is fixed to the cushion frame by a pin member, and includes a fitting portion that fits into an end portion of the seat connecting member and a concave portion that fits the pin member .
The fitting portion is
A plurality of abutting portions that abut against the inner circumferential surface of the sheet connecting member at a predetermined interval in the circumferential direction;
A non-contact portion that is provided between the plurality of contact portions and does not contact the inner peripheral surface of the sheet connecting member;
The end portion of the connecting member for the sheet and the fitting portion of the mounting member are bonded by an adhesive filled in the non-contact portion,
The pin member is formed in a substantially T shape in a cross section along the fitting direction, and is in contact with the cushion frame, the inner peripheral surface of the recess of the mounting member, and the axial end surface of the mounting member. It is a feature.

According to the first aspect of the present invention, when the fitting portion of the attachment member is fitted to the end portion of the connecting member for the sheet, the non-contact portion is filled with the adhesive, so that the fitting portion is entirely More adhesive can be applied as compared with the case where the sheet contacts the inner peripheral surface of the connecting member for the periphery. Since the adhesive strength increases as the adhesive amount increases, the attachment member can be firmly attached to the resin connection member for sheet.
In addition, since the plurality of contact portions are in contact with the inner peripheral surface of the sheet connecting member, the mounting portion is positioned with respect to the sheet connecting member. Thereby, the space | interval from a non-contact part to the connection member for sheets will be stabilized, and the quantity of the adhesive agent in the some non-contact part 411 can also be fixed. Therefore, the mounting strength of the mounting member can be stabilized.

  According to the second aspect of the present invention, since the center of the sheet connecting member is disposed in the polygon connecting at least three contact portions, the mounting member can be disposed in the sheet connecting member without deviation. It becomes possible.

  According to the invention of claim 3, since the protrusion of the attachment member and the notch of the connecting member for the seat are engaged, even if the connecting member for the seat and the attaching member are likely to rotate relatively, The protrusion engaged with the notch restricts the movement. Therefore, relative rotation between the connecting member for seat and the attachment member can be suppressed.

  According to the fourth aspect of the present invention, since the protrusion is formed in the non-contact portion, the protrusion and the contact portion can be arranged apart from each other. Compared with the case where the protrusion and the contact portion overlap, when the protrusion and the contact portion are arranged apart from each other, the rigidity of the mounting member itself can be increased.

  According to the fifth aspect of the present invention, since the length of the contact portion in the axial direction is set longer than the protrusion, the contact area with the sheet connecting member can be increased, and the sheet connecting member In contrast, the mounting member can be stably disposed.

  According to the sixth aspect of the present invention, since the plurality of protrusions are provided so as to engage with each of the plurality of notches, the load acting on one protrusion can be dispersed. Therefore, an increase in the size of the protrusion itself can be suppressed, and the diameter of the mounting member can be reduced.

  According to the seventh aspect of the present invention, since the abutting portion has a tapered shape that gradually tapers toward the tip, the abutting portion is provided when the attachment member is fitted to the end of the connecting member for the sheet. It can be prevented from being caught and can be smoothly inserted.

  According to the eighth aspect of the invention, the same effect as that of the first aspect of the invention can be achieved. Thereby, the attachment rigidity of the connecting member for a sheet becomes high, and the rigidity of the sheet itself can be increased.

It is a side view showing the schematic structure of the sheet structure concerning this embodiment. It is sectional drawing which shows schematic structure of the attachment structure of the connection member for sheets which concerns on this embodiment, and an attachment member. It is a perspective view which shows schematic structure of the attachment structure of the connection member for sheets of FIG. 2, and an attachment member. It is a perspective view which shows schematic structure of the shaft member of this embodiment. It is a front view of the shaft member of FIG. It is sectional drawing cut | disconnected by the VV line | wire in FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a side view showing a schematic configuration of a sheet structure according to the present embodiment. The seat structure according to the present embodiment is a seat structure such as a vehicle seat. As shown in FIG. 1, the seat structure 100 includes a slide rail 102, a bottom seat 103, a backrest 104, a reclining mechanism 105, and the like. The lower end portion of the backrest 104 is connected to the rear end portion of the bottom seat 103 by the reclining mechanism 105, and the backrest 104 is erected at the rear end portion of the bottom seat 103. The backrest 104 can be tilted in the front-rear direction with respect to the bottom seat 103 by the reclining mechanism 105. The reclining mechanism 105 locks the backrest 104 to the bottom seat 103 to stop the tilting of the backrest 104, releases the lock, and biases the backrest 4 in a direction to tilt the backrest 104 forward.

  The bottom sheet 103 includes a pair of left and right frames 2 and a pipe-like connecting member 6 that connects the pair of left and right frames 2. The frame 2 and the connecting member 6 are connected via a pin member 3 and a shaft member 4 which will be described later.

  FIG. 2 is a cross-sectional view illustrating a schematic configuration of a mounting structure for a seat connecting member and a mounting member according to the present embodiment, and FIG. 3 is a perspective view illustrating a schematic configuration of a mounting structure for the seat connecting member and the mounting member. . As shown in FIGS. 2 and 3, the attachment structure 1 for the connecting member and the attachment member for the seat is a frame 2, a pin member 3 that engages with the frame 2, and an attachment that is coaxially attached to the pin member 3. A shaft member 4 as a member, a link member 5 pivotally supported by the shaft member 4 along the frame 2, and a pipe-shaped resin connection member 6 as a sheet connection member are provided.

The frame 2 is a cushion frame or the like of the seat structure 100, and is molded from resin. A through hole 21 into which the pin member 3 is fitted is formed in the frame 2.
The pin member 3 includes a pin head 31 and a columnar convex portion 32 protruding in the axial direction from the pin head 31. The pin head 31 is provided with a fitting portion 33 that fits into the through hole 21 of the frame 2 and a step portion 34 that accommodates the frame 2. The width H of the stepped portion 34 is set to the same length as the thickness of the frame 2. A concave portion 35 having an inner diameter larger than the outer diameter of the convex portion 32 is formed on the opposite side of the pin head 31 from the side where the convex portion 32 is provided.

The shaft member 4 is attached to an end portion of a connecting member 6 that is spanned between the pair of frames 2. FIG. 4 is a perspective view showing a schematic configuration of the shaft member 4, and FIG. 5 is a front view of the shaft member 4. As shown in FIGS. 2 to 5, the shaft member 4 includes a fitting portion 41 that is fitted to the end portion of the connecting member 6, a shaft portion 42 that pivotally supports the link member 5, and a convex portion of the pin member 3. And a recess 43 into which 32 is fitted.
The fitting portion 41 is provided between the plurality of contact portions 411 that contact the inner peripheral surface of the connection member 6 with a predetermined interval in the circumferential direction, and the plurality of contact portions 411. And a non-contact portion 412 that does not contact the inner peripheral surface. In this embodiment, the case where the four contact parts 411 are arrange | positioned at equal intervals is illustrated. The four contact portions 411 are arranged at intervals of 90 degrees from positions shifted by 45 degrees with respect to the vertical line. Further, the outer peripheral surfaces of the four contact portions 411 are formed along the same circumference S <b> 1 as the inner periphery of the connecting member 6. And the center E of the connection member 6 is arrange | positioned in the square F which tied the center of each contact part 411. FIG.
Moreover, the outer peripheral surface of the non-contact part 412 is a concentric circle of the circumference S1, and is formed along a circumference S2 having a smaller diameter than the circumference S1. For this reason, a step is formed between the non-contact portion 412 and the contact portion 411, and when the fitting portion 41 is fitted into the connecting member 6, a gap is formed by the step. Before this fitting, an adhesive is applied to the outer peripheral surface of the fitting portion 41. The adhesive applied to the outer peripheral surface of the contact portion 411 is scraped off by the inner peripheral surface of the connecting member 6 and remains only a little, but the adhesive moves to the non-contact portion 412, and therefore moves into the non-contact portion 412. The adhesive is filled (in FIG. 5, the hatched portion T indicates the adhesive).

  6 is a cross-sectional view taken along line VV in FIG. As shown in FIG. 6, the contact portion 411 extends to the vicinity of the tip portion of the fitting portion 41. And the contact part 411 is formed in the taper shape which tapers gradually toward the front-end | tip.

  A first protrusion 44 is provided in the middle of the upper two contact portions 411 and the lower two contact portions 411 of the fitting portion 41. The rotation of the shaft member 4 in the circumferential direction is restricted by engaging with the notches 61 provided respectively one above and below the end of the connecting member 6. The length of the first protrusion 44 in the axial direction is set shorter than the contact portion 411.

A rib 45 extending in the circumferential direction is provided at the proximal end portion of the fitting portion 41. Since the rib 45 engages with the end of the connecting member 6, the shaft member 4 is positioned. The first protrusion 44 and the contact portion 411 are formed so as to continue to the rib 45. Further, a second protrusion 46 protruding in an arc shape is provided on the surface of the rib 45 opposite to the connecting member 6. The second protrusion 46 is disposed on the extension line in the axial direction of the connecting member 6. Further, the second protrusion 46 is disposed on an extension line in the axial direction of the contact portion 411. That is, the second protrusion 46 and the contact portion 411 are arranged on the same plane that passes through the axial direction of the connecting member 6.
The shaft portion 42 is formed in a cylindrical shape on the same axis as the fitting portion 41. The outer diameter of the shaft portion 42 is smaller than the outer diameter of the connecting member 6 and larger than the inner diameter of the through hole 21 of the frame 2. Thereby, the end surface of the shaft portion 42 comes into contact with the fitting portion 33 of the pin member 3 and the frame 2.

  The concave portion 43 is recessed in a cylindrical shape from one end surface of the shaft member 4 along the axial direction of the fitting portion 41 and the shaft portion 42. The recess 43 passes through the link member 5 and extends to the inside of the end of the connecting member 6. When the convex portion 32 of the pin member 3 is fitted into the concave portion 43, the convex portion 32 faces the link member 5 and extends to the inside of the end portion of the connecting member 6. A welding mark 7 by laser welding is formed at a boundary L between the concave portion 43 and the convex portion 32 of the pin member 3. The welding mark 7 has a wedge shape in which the outer side is thicker and tapered toward the inner side in order to irradiate laser light from the outer side of the frame 2 during welding. The weld mark 7 is formed up to a position facing the link member 5. Thereby, the welding mark 7, the step part 34, and the frame 2 exist on the same vertical plane.

  The link member 5 is a link member that forms part of, for example, the reclining mechanism 5 of the seat structure 100 or the seat surface position adjustment mechanism. The link member 5 is pivotally supported by the shaft portion 42 of the shaft member 4 and rotates with the shaft portion 42 as a rotation axis. One surface of the link member 5 is in contact with the second protrusion 46 of the shaft member 4. A gap is formed between the link member 5 and the rib 45 by the second protrusion 46. By filling the gap with the adhesive, the amount of the adhesive that bonds the link member 5 and the shaft member 5 can be secured, and the adhesive strength between the link member 5 and the shaft member 5 is increased. .

As described above, according to the present embodiment, when the fitting portion 41 of the shaft member 4 is fitted to the end portion of the connecting member 6, the non-contact portion 412 is filled with the adhesive. Compared with the case where the fitting part 41 contacts the inner peripheral surface of the connecting member 6 over the entire circumference, more adhesive can be applied. Since the adhesive strength increases as the adhesive amount increases, the shaft member 4 can be firmly attached to the connecting member 6 made of resin.
In addition, the shaft member 4 is positioned with respect to the connection member 6 because the plurality of contact portions 411 are in contact with the inner peripheral surface of the connection member 6. Thereby, the space | interval from the non-contact part 411 to the connection member 6 will be stabilized, and the quantity of the adhesive agent in the some non-contact part 411 can also be fixed. Therefore, the mounting strength of the shaft member 4 can be stabilized.
If the shaft member 4 and the connection member 6 can be firmly attached, the attachment rigidity of the connection member 6 can be increased, and the rigidity of the sheet itself can be increased.

In addition, since the center of the connecting member 6 is arranged in a quadrilateral connecting the four contact portions 411, the shaft member 4 can be arranged in the connecting member 6 without deviation.
In addition, since the first protrusion 44 of the shaft member 4 and the notch 61 of the connecting member 6 are engaged, even if the connecting member 6 and the shaft member 4 are likely to rotate relatively, the first protrusion 44 of the connecting member 6 is engaged with the notch 61. The combined first protrusions 44 restrict the movement. Therefore, relative rotation between the connecting member 6 and the shaft member 4 can be suppressed.

Further, since the length of the contact portion 411 in the axial direction is set to be longer than that of the first protrusion 44, the contact area with the connecting member 6 can be increased, and the shaft member 4 with respect to the connecting member 6. Can be stably arranged.
Moreover, since the contact part 411 is a taper shape which tapers gradually toward the front-end | tip, it suppresses that the contact part 411 is caught when fitting the shaft member 4 in the edge part of the connection member 6, It can be inserted smoothly.
In addition, since the first protrusion 44 is formed in the non-contact portion 412, the first protrusion 44 and the contact portion 411 can be arranged apart from each other. Compared with the case where the first protrusion 44 and the contact portion 411 overlap, when the first protrusion 44 and the contact portion 411 are arranged apart from each other, the rigidity of the shaft member 4 itself can be increased.
In addition, since the plurality of first protrusions 44 are provided so as to engage with each of the plurality of notches 61, the load acting on one first protrusion 44 can be dispersed. Therefore, an increase in the size of the first protrusion 44 itself can be suppressed, and the diameter of the shaft member 4 can be reduced.
Moreover, if the notch 61 and the 1st protrusion 44 are provided up and down like the said embodiment, it is possible to confirm both engagement easily.

The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention. In the following description, the same portions as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
For example, in the above-described embodiment, the case where four contact portions 411 are formed has been described as an example, but it is sufficient that three or more contact portions 411 are formed. In any case, it is preferable that the center of the connecting member 6 is arranged in a polygon connecting at least three contact portions 411. With such an arrangement, the shaft member 4 can be arranged in the connecting member 6 without deviation.

In the above embodiment, the shaft member 4 that pivotally supports the link member 5 has been described as an example of the mounting member. However, as other mounting members, the end of the connecting member 6 is used to adjust the distance between the pair of cushion frames. Examples thereof include a pin member that fits into the portion.
In the above-described embodiment, the case where the outer peripheral surface of the non-contact portion 412 is formed concentrically with the outer peripheral surface of the contact portion 411 has been described as an example. The shape may be any shape as long as it does not contact the peripheral surface.
In the above-described embodiment, the attachment structure of the connecting member for seat and the attachment member has been described as an example. However, the above-described configuration can be applied to the attachment structure of other connection members and attachment members. It is.

1 Frame and shaft member mounting structure 2 Frame (cushion frame)
3 Pin member 4 Shaft member (Mounting member)
5 Link member 6 Connection member (connection member for sheet)
7 Welding Mark 21 Through-hole 31 Pin Head 32 Convex Part 33 Fitting Part 34 Stepped Part 35 Concave Part 41 Fitting Part 42 Shaft Part 43 Concave Part 44 First Projection (Protrusion)
45 Rib 46 Second projection 61 Notch 100 Seat structure 102 Slide rail 103 Bottom seat 104 Backrest 105 Reclining mechanism 411 Abutting part 412 Non-abutting part L Boundary T Shaded part (adhesive)

Claims (8)

In the mounting structure of the connecting member for seat and the mounting member,
The connecting member for the sheet is formed in a pipe shape,
The mounting member is fixed to the cushion frame by a pin member, and includes a fitting portion that fits into an end portion of the seat connecting member and a concave portion that fits the pin member .
The fitting portion is
A plurality of abutting portions that abut against the inner circumferential surface of the sheet connecting member at a predetermined interval in the circumferential direction;
A non-contact portion that is provided between the plurality of contact portions and does not contact the inner peripheral surface of the sheet connecting member;
The end portion of the connecting member for the sheet and the fitting portion of the mounting member are bonded by an adhesive filled in the non-contact portion,
The pin member is formed in a substantially T shape in a cross section along the fitting direction, and is in contact with the cushion frame, the inner peripheral surface of the recess of the mounting member, and the axial end surface of the mounting member. A mounting structure of a connecting member for a sheet and a mounting member. In the attachment structure of the connecting member for seat and the attachment member according to claim 1,
At least three of the contact portions are provided,
The seat connecting member and mounting member mounting structure are characterized in that the center of the seat connecting member is disposed within a polygon connecting the at least three contact portions. In the attachment structure of the connecting member for seat and the attachment member according to claim 1 or 2,
A notch is formed at the end of the sheet connecting member,
A fitting structure for a connecting member for a sheet and a mounting member, wherein the fitting portion of the mounting member is provided with a protrusion that engages with the notch. In the attachment structure of the connecting member for seat and the attachment member according to claim 3,
The attachment structure of the connecting member for a sheet and the attachment member, wherein the protrusion is formed in the non-contact portion. In the attachment structure of the connecting member for seat and the attachment member according to claim 3 or 4,
A length of the contact portion in the axial direction is set to be longer than that of the protrusion. In the attachment structure of the connecting member for seat and the attachment member according to any one of claims 3 to 5,
A plurality of the notches are provided at the end of the connecting member for the sheet,
A plurality of the protrusions are provided so as to be engaged with each of the plurality of notches, and the attachment structure of the connecting member for the sheet and the attachment member. In the attachment structure of the connecting member for seat and the attachment member according to any one of claims 1 to 6,
The attachment structure of a connecting member for a sheet and an attachment member, wherein the contact portion has a tapered shape that gradually tapers toward a tip. A seat structure including a pipe-like connecting member for seat and an attachment member spanned between the left and right cushion frames,
The connecting member for the sheet is formed in a pipe shape,
The mounting member is fixed to the cushion frame by a pin member, and includes a fitting portion that fits into an end portion of the seat connecting member and a concave portion that fits the pin member .
The fitting portion is
A plurality of abutting portions that abut against the inner circumferential surface of the sheet connecting member at a predetermined interval in the circumferential direction;
A non-contact portion that is provided between the plurality of contact portions and does not contact the inner peripheral surface of the sheet connecting member;
The end portion of the connecting member for the sheet and the fitting portion of the mounting member are bonded by an adhesive filled in the non-contact portion,
The pin member is formed in a substantially T shape in a cross section along the fitting direction, and is in contact with the cushion frame, the inner peripheral surface of the recess of the mounting member, and the axial end surface of the mounting member. Characteristic sheet structure.

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